Yes, questions from surface chemistry and catalysis can be expected in the chemistry section of the JEE Main exam. These topics are an integral part of the syllabus and are often covered in the exam.

Surface Chemistry:
Surface chemistry deals with the study of the phenomena that occur at the interface of two phases, such as solid-gas, solid-liquid, or liquid-gas. It includes the study of adsorption, catalysis, colloids, and emulsions. The following subtopics are important and can be asked in the JEE Main exam:

1. Adsorption:
- Types of adsorption: physical and chemical adsorption
- Factors affecting adsorption: temperature, pressure, surface area, and nature of adsorbate and adsorbent
- Freundlich and Langmuir adsorption isotherms
- Applications of adsorption in industries, such as in the purification of water, gas masks, and chromatography

2. Catalysis:
- Types of catalysts: homogeneous and heterogeneous catalysts
- Mechanism of catalysis: adsorption theory and intermediate compound formation theory
- Enzyme catalysis and its importance in biological systems
- Industrial applications of catalysis, such as in the Haber process for ammonia synthesis and in petroleum refining

Catalysis:
Catalysis is the process of increasing the rate of a chemical reaction by the presence of a substance called a catalyst. It plays a crucial role in various industrial processes and has significant applications in the field of chemistry. Some key points to consider are:

1. Heterogeneous Catalysis:
- Definition and examples of heterogeneous catalysis
- Adsorption theory of heterogeneous catalysis
- Surface reactions and catalytic cycles

2. Homogeneous Catalysis:
- Definition and examples of homogeneous catalysis
- Mechanisms of homogeneous catalysis, such as acid-base catalysis and redox catalysis
- Applications of homogeneous catalysis in organic synthesis

Conclusion:
In conclusion, questions from surface chemistry and catalysis are likely to appear in the chemistry section of the JEE Main exam. It is important to thoroughly study these topics, understand the underlying concepts, and practice solving relevant problems to perform well in the exam.